user manual

Page 22

speed. It monitors all of the controls necessary to guarantee that the engine stays

between the user defined parameters of operation, also providing failsafe shutdown of

the engine when it has detected any important anomaly. In order to make this

assessment, the FADEC has a rpm sensor, a thermocouple input, a throttle servo

input, power connections for the fuel pump, starter, glow plug, fuel and gas valves

and the battery and a digital (RS232) serial port to program and read the data in real-

time to a PC. The measurements made by the FADEC are:

• Temperature of the exhaust gas

• Battery voltage

• Battery current

• Width of the throttle pulses from the radio transmitter

• Engine rotor RPM

• Engine run time.

• External analog signal (airspeed sensor)

Features:

• RPM input: Magnetic sensor up to 250.000 R.P.M.

• Temperature range up to 1000ºC using a "K" type thermocouple

• PWM control of 8192 levels for pump, glow plug and starter motor.

• Adjustable power for the starter motor

• Build-in electronic brake for the starter motor to help the clutch to disengage.

• Blown glow-plug detector

• Adjustable glow-plug power

• Glow-plug temperature independent of the battery voltage

• Elapsed engine run timers

• RS232 or USB interface to PC, cable must be purchased separately.

• Black box function. Record the engine measures each 0.5sec up to 52 minutes.

• Radio link error counter

• Battery usage counter in mA/h, (reset this value on a freshly charged pack)

• Test functions for all connected devices.

Setting up the ECU

All the programming and measures are done through the HDT, Hand Data Terminal or

commonly known as GSU, Ground Support Unit. Once the FADEC is programmed, it is

no longer necessary and do not leave inside the airplane. The GSU has a 16

character LCD screen and 4 buttons. The first two buttons on the left side allow

moving through the menus, and the two buttons on the right side (+, -) allow